Have you ran ArA or MassMax solo yet? If you haven't it will be hard to know which product is doing what. Also, if you do stack them, make sure to keep the doses hours apart for full effectiveness.
What is your goal?
For bulking I'd add the ABE. You will get additional hunger combined with the appetite increase from MassMax. The added strength increase would work well with ArA and MassMax also.
If cutting, I'd add the AlphaMax. The DHAA plus F95 promotes nice fat loss. Plus the overall well being and aggression can be beneficial to help get the most out of the ArA and MassMax.
You really can't go wrong with any combination of those supplements. Adding SlinMax is ideal at any point, especially if you plan on really packing in the carbs.
I personally would take the mentioned supplements and lay out a nice 16 week natty run. I feel that would be better than cramming them all into 8 weeks.